Feed mill



(Nu Model.) 2 'sheets-sheet 1.A

vT. o. MDW-GAN'. FEED MIL-L. y. No. 380,180. l Patented Mar. 27, 1888-.l

Y. 'atnge'd Manz?, 1.888.

UNITED STATES PATENT OFFICE. 1

THOMAS O. OADWGAN, yOE SPRINGFIELD, OHIOASSIGNOE, BY'DIEEOT AND MESNE ASSIGNMENTS, To THE SPRINGFIELD ENGINE AND' THEESHEE COMPANY, OE I SAME PLAGE.

FEED- MILL.

SPECIFICATION forming part of Letters Patent No. 380,180, dated March27, 1888. n Application filed August Eil, 15386.` Serial No. 212,125. (No model.)

To all whom, it may concern:

Be it known that I, THOMAS C. GADWGAN, a citizen of the United States, residing 'at Springfield, in the county of Clark and State of Ohio, have invented certain new and useful Improvements in Feed-Mills; and Ido ydeclare the following to be a full, clear, and exact de'- scription of the invention, such as will'enable others skilled in the art to which it appertains IO to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form apart of this specification.

My invention relates especiallyto the means for regulating the distance from each other of the grinding-surfaces; and it consists in the :novel construction and combinations of parts hereinafter described, and particularly pointed out in the claims.

In order to make my invention more clearly understood, I have shown in the accompanying drawings a means for carrying the same into effect.

In said drawings, Figure 1 is a perspective view of a feed-mill embodying my invention. Fig. 2 is a plan view of a portion ofthe same, the hopper and a part of the casing being removed. Fig. 3 is a vertical longitudinal section of a portion of the mill, showing the grinding devices. Fig. 4 is an yelevation of the adjusting-lever for the latter.

My present invention is in the nature of an improvement upon the feed-mill for which Letters Patent were granted to me August 4, 1885, No. A323, 561, and some of the features of the construction illustrated in this application need not be herein described in detail.

Referring to the drawings, A indicates the feed-hopper; B,the casing ofthe crushing and grinding devices, of substantially cylindrical form,and enlarged at that part which contains the grinding rings and wheel; and B', the lower extension of the hopper, which is mounted upon the case B over the crusher.

F is the feeder-shaft, mounted in the upper part of extension B parallel with the 4main shaft C of the mill, and armed with cuttingteeth f, adapted to draw the material from the hopper and partially reduce the same before it yis delivered to the Crusher. A slide, I, 5o v lmounted in ways u in the hopper, serves to Vregulate the quantity fed.

Power is applied tothe mill, which may be mounted, as shown, upon an iron frame, D D2, through a band-wheel, Pupon the shaft C, which is also provided with a balance-wheel,

J. From -pulley 1 on shaft C power is transmitted to the feeder-shaft through belt b2, bandwheel 2, pinion 3, and gear-wheel 4, the latter being mounted upon thej ournal b of the feeder- 6o shaft. The stud, on which -is mounted said parts 2 and3, is carried by a link, H, hung upon journal b', and adapted to be fixed in such position as to properly tighten belt b2.

That part of the mill embraced in the crushing and grinding devices does not differ materially from the same parts described in my patent before referred to, these devices consisting, essentially, of two grinding-rings, one,

C', being xed and the other adjustable, and 7o a vertical grinding-wheel,l C3, rotating between said grinding-rings andautomatically adjustable between said grinding-rings, said grinding devices being inclosed in a case with a crusher, the latter and the grinding-wheel being mounted upon the same horizontal shaft.

C is the movable grinding-ring, which is attached directly to the end of sleeve D by bolts or otherwise,'said-sleeve being formed with a disk-shaped head, d, for this purpose. 8O Ois a box which has a bearing for the sleeve D.

n are ribs cast on the inside -of each section of case B, and serve by'their engagement withnotches in part d to prevent sleeve D from rotation.'

The adjustment of the sleeve D is effected by a spring-latched lever, G, extending transversely across the end of the sleeve, land pivoted to the latter by the screw-bolts d,passing through lugs on the lever. The-end of lever G opposite the handle has a fork or-notch in it, which straddles the neck of the pinionheadednut g on the screw-bolt h. A rack, j, extends from the end of thecase B through a hole in thelever, and has a series of holes 95 therein for retaining the lever G in adjustment. The position of the-lever is determined by screwing up or unscrewing the nut g o n bolt' h, thus giving the lever an adjustable fulcrum.` The nut is held in its adjusted position by a pawl, p, pivoted on the lever and engaging the notched periphery of the nut. In adjusting the grinding-ring C lever G is thrown to- Word or from the grinding-case, as desired, latch 1I being pressed down to raise pin which latter engages with holes i in the rack j, and the sleeve D' is withdrawn or pushed in, as the case may be. At the desired point the spring-latch i is released, and the pin i', to which its front end is pivoted by a fork, is dropped into any one of the holes fi in the rack j. Screw-bolt h, which regulates the throw of lever G by means of its nut g, is secured at the opposite end in a lug or dip, c, bolted by bolt o to the edge ilanges of the case B.

When ring C is adjusted to a different distance from ring C', as already described, the wheel C3 automatically changes its position to correspond.

The operation of my mill has been suciently set forth in the above description of its construction.

Having thus described my invention, what I claim, and desire to secure by Letters Patent of the United States, is-

1. In a grinding-mill, the combination fof the rotating shaft, a grinding-wheel mounted thereon and turning therewith, a movable nonrotating grinding-ring adjustable longitudinally upon the shaft, an adjusting-lever connected with the non-rotating ring, and an adjustable fulcrum for` the end of the lever.

2. In a grinding-mill, the combination of the rotating shaft, a grinding-wheel mounted thereon and turning therewith, a. movable nonrotatingA grinding-ring, the latter having a sleeve and being adjustable on the line of .the 4o shaft, a transverse lever pivotally attached to said sleeve, the adjustable toothed nut, to which said lever is fulcrumed, and the adjusting devices for retaining said lever in a fixed position when adjusted, substantially as set 45 forth.

3. In a grinding-mill, the combination of the rotating shaft 0f a Xed grinding disk or ring, C', a movable non-rotating grinding-ring adjustable longitudinally upon the shaft, a movable self-adjusting grinding-wheel situated between said grinding-rings longitudinally movable upon the shaft and rotating therewith, an adjusting-lever connected with the second non-rotating grinding-ring, and a fulcrum for said lever adjustable toward or from the ring, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

THOMAS C. CADWGAN.

Witnesses:

RANDOLPH COLEMAN, B. C. CONVERSE. V 

